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Did a leakdown test before spraying.

Discussion in 'Forced Induction' started by BoogieDown, Jan 18, 2006.

  1. BoogieDown

    BoogieDown Senior Member

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    This test was done after driveing for about and hour. I used a dual gauge tester. Has the PSI supplied and leakdown percentage.
    Cylinder 1,2,4 had 15% leakdown, droped 3-5psi on each. Cylinder 3 had 35% leakdown with a 5-7psi drop.

    No air comeing out the intake or tailpipe. You could hear it at the oil fill hole on the valve cover which is the rings. The engine has about 110k milse on it and doesn't smoke or burn oil. I'm not going any bigger than a 55 Dry shot on my Zex kit. I bought this kit used and very cheap. I don't plan on getting a wet kit.
    Oh and its going on a D16Z6
     
  2. formby

    formby learning in progress

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    i would say start with low shots....buy a step colder ngk v power plugs or similar...adjust timing 2 deg ret...may be more [better safe that sorry]...if you have an adj fpr add a little more fuel....93 fuel

    then go out and do a 3rd gear pull after 3k rpm go wot and go from there
     
  3. TurboSnatch

    TurboSnatch Member

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    i agree, also had similar engine situation. i think a 55 shot on the weeends won hurt
     
  4. DelSlo

    DelSlo Senior Member

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    should see a 15% drop on leakdown tests, if you hear it in the valve cover only on the one cylinder chances are you got a bad valve.
     
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